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This becomes necessary in case of the USB audio driver where we have to wait for and query the function first. That being said, alternatively we could also announce the session but ignore any request until there is a device we can use. Issue #3929.
59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
/*
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* \brief Audio library interface
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* \author Josef Soentgen
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* \date 2014-12-27
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*
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* This header declares the private Audio namespace. It contains
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* functions called by the driver frontend that are implemented
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* by the driver library.
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _AUDIO__AUDIO_H_
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#define _AUDIO__AUDIO_H_
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/* Genode includes */
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#include <base/env.h>
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#include <util/xml_node.h>
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/*****************************
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** private Audio namespace **
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*****************************/
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namespace Audio_out {
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enum Channel_number { LEFT, RIGHT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
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}
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namespace Audio_in {
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enum Channel_number { LEFT, MAX_CHANNELS, INVALID = MAX_CHANNELS };
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}
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namespace Audio {
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void update_config(Genode::Env &, Genode::Xml_node);
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void init_driver(Genode::Env &, Genode::Allocator &, Genode::Xml_node,
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Genode::Signal_context_capability);
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void play_sigh(Genode::Signal_context_capability cap);
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void record_sigh(Genode::Signal_context_capability cap);
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int play(short *data, Genode::size_t size);
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int record(short *data, Genode::size_t size);
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}
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#endif /* _AUDIO__AUDIO_H_ */
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